Heat shield with sealing member

Abstract

According to an aspect, the present embodiments may be associated with a heat shield including a sealing member. In an embodiment, the sealing member is positioned along at least a portion of a partially hemmed edge and retained thereby. Thus, the heat shield is capable of providing insulative and/or sealing properties when used, specifically thermal, vibrational and/or acoustical shielding, as well as limiting fluid flow across the edge of the heat shield.

What is claimed is: 
     
       1. A heat shield, comprising:
 a first portion having a first end and a second end; 
 a second portion integrally formed with the first end of the first portion, the second portion configured to form at least a partially hemmed edge such that the partially hemmed edge provides a raked edge and an undulating edge extending along at least a portion of an axial length of the second portion, the undulating edge being formed by alternating a repeating pattern of a flattened portion and a raised portion; and 
 a sealing member secured to the partially hemmed edge, the sealing member comprising a metallic wire mesh comprising a plurality of metal fibers, and having an opening positioned along a longitudinal axis of the sealing member, 
 wherein the raised portion and the raked edge of the partially hemmed edge are adapted and configured to mechanically engage the plurality of metal fibers to retain the sealing member along at least a portion of the partially hemmed edge. 
 
     
     
       2. The heat shield of  claim 1 , wherein the sealing member comprises a semi-flexible material and is configured for receiving the partially hemmed edge, such that the retention of the sealing member by the partially hemmed edge is a function of both a shape of the partially hemmed edge and the semi-flexibility of the sealing member. 
     
     
       3. The heat shield of  claim 2 , wherein the semi-flexible material comprises at least one of an organic fiber and an inorganic fiber entangled with the metallic wire mesh. 
     
     
       4. The heat shield of  claim 1 , wherein the first and second portions of the heat shield comprises a first metallic layer, a second metallic layer, and a nonwoven layer sandwiched between the first and second metallic layers. 
     
     
       5. The heat shield of  claim 2 , wherein the partially hemmed edge is adapted and configured to mechanically retain the sealing member without using a mechanical fastener. 
     
     
       6. The heat shield of  claim 1 , wherein the opening is a slit comprising an annular end. 
     
     
       7. The heat shield of  claim 6 , wherein the annular end is positioned at a center of the sealing member. 
     
     
       8. The heat shield of  claim 1 , wherein the heat shield is a multilayered shield, the multilayered shield comprising a first layer and a second layer, wherein the first and second layers each comprise spaced apart partially hemmed edges comprising a plurality of flattened and raised portions. 
     
     
       9. The heat shield of  claim 7 , wherein the partially hemmed edge is retained on an interior surface of the opening, such that at least a portion of and wherein the partially hemmed edge is adjacent to the annular end. 
     
     
       10. The heat shield of  claim 1 , wherein a cross-sectional shape of the sealing member is one of a rectangular, an elliptical, a polygonal, and a cylindrical shape. 
     
     
       11. The heat shield of  claim 1 , wherein a length of the opening extends to between approximately 25% and approximately 75% of a width of the sealing member. 
     
     
       12. The heat shield of  claim 1 , wherein a length of the opening is longer than a width of the partially hemmed edge. 
     
     
       13. The heat shield of  claim 1 , wherein the heat shield provides insulative properties when positioned proximal to a thermal, acoustical and/or vibrational source. 
     
     
       14. The heat shield of  claim 1 , wherein the sealing member comprises a soft edge to provide a fluid seal across the partially hemmed edge of the heat shield. 
     
     
       15. A heat shield for shielding one or more exhaust ports, comprising:
 a first portion having a first end and a second end; 
 a second portion integrally formed with the first end of the first portion, the second portion configured to form a partially hemmed edge such that the partially hemmed edge provides a raked edge and an undulating edge extending along at least a portion of an axial length of the second portion, wherein the undulating edge is formed by alternating a repeating pattern of a flattened portion and a raised portion; and 
 a sealing member secured to the partially hemmed edge, the sealing member comprising a metallic wire mesh comprising a plurality of metal fibers, and having an opening positioned along a longitudinal axis of the sealing member, wherein 
 the raised portion and the raked edge of the partially hemmed edge are adapted and configured to mechanically retain the sealing member without using a mechanical fastener to retain the sealing member along at least a portion of the partially hemmed edge, and 
 at least a portion of a length of the raked edge varies by an angle formed between the first portion and the second portion. 
 
     
     
       16. The heat shield of  claim 15 , wherein the sealing member comprises a semi-flexible material comprising a ceramic fiber, wherein the ceramic fiber and the plurality of metal fibers are entangled together. 
     
     
       17. The heat shield of  claim 15 , wherein the sealing member comprises a soft edge to provide a fluid seal across the partially hemmed edge of the heat shield. 
     
     
       18. The heat shield of  claim 1 , wherein the sealing member and contours of the first portion and the second portion direct hot air flow away from the sealing member towards the second end of the first portion of the heat shield.